Preparation and properties of partially oxidized N-methylisoquinolinium bis(oxalato)platinate nanowires

Stephanie K. Hurst, Lee Spangler, Edwin H. Abbott, Ray Larsen, Eric S. Peterson

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

Electrochemical oxidation of [C10H10N] 2[Pt(ox)2] • H2O (1) (C10H 10N = N-methylisoquinolinium, ox = oxalate) lead to the simple and rapid synthesis of nanowires of formula [C10H10N] 1.6[Pt(ox)2] • 3H2O (2) with sub-micron diameters. The partially oxidized platinum polymer 2 was examined via electron microscopy and wires with diameters of less than 5 nm were observed. The bulk electrical properties of the wires were investigated via impedance spectroscopy. Electrochemical oxidation of [C10H10N] 2[Pt(ox)2] • H2O (1) (C10H 10N = N-methylisoquinolinium, ox = oxalate) leads to the synthesis of new partially oxidized platinum nanowires of formula [C10H 10N]1.6[Pt(ox)2] • 3H2O (2). The nanowires were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Wires with diameters of less than 5 nm and lengths of over 1 μm were observed. Energy dispersive spectroscopy (EDS) and microanalysis confirmed the degree of partial oxidation of the nanowires. The bulk electrical properties including phase angle and real and imaginary impedance values were measured and a model of the electrical conduction circuit was proposed. The significance of this work is that the large N-methylisoquilolinium cation leads to nanostructures, possibly involving individual molecular wires which has not been previously observed in the bis(oxalato)platinate nanowire system.

Original languageEnglish (US)
Pages (from-to)173-176
Number of pages4
JournalInorganica Chimica Acta
Volume358
Issue number1
DOIs
StatePublished - Jan 1 2005

Keywords

  • Bis(oxalato)platinate
  • Isoquinolinium
  • Nanowire
  • Partially oxidized
  • Platinum

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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